Bearing for shafts or spindles equipped with radially spaced overhanging races



Aprll 14, 1953 v. E. PALUMBO 2,635,018

BEARINGS FoR sHAFTs oR SPINDLES EQUIPRED WITH RADIALLY sPAcED ovERRANGING RACES Filed Dec. 50, 1949 ArmA/Eys Patented Apr. 14,. 1953 l PATENT OFFICE y Y Y intestin? f -BARNG non 'sHAF'r's on sBrNnLEs nomgriiilwrn RADIALLX sPAcED ovERnANGiNG RACES f .vincent nl Parent, cleveland Heights, onto i Aopuct'imiecemiei so, 19:49 seria-i No. 135,992

'herein disclosed the invention in. association with a grinding spindle and its understood, however, that the inventionlsnq broaderor more general application, for Vwhlfgll reason ther present disclosureshouldbe ta'll'lV illustrativeratherthan as limiting.. A

Van obi-ect, of thai-mention .is to .provideanishly `efficient and durable bearingtha't ope-rates. the maximum of ease and wherein. accuracy :In the concentricity of the *bearing .partsor races with respect to the axis ci the shaft-or spin-fille is assured by the; design and construction ofthe bearing. L M Another object is to pro-vide a. nearing, that is practically unaiected by heat.y generated. therein during prolonged periods of use. v y -A further object is4 to provide a bearing. Where.- in; the.l parts are of simple construction, are 4economical of manufacture; and quick 'and @0nvenient of assembly. y The foregoing, objects and advantagesr with others that will appear as this deseriptlon proceedsl are attained in V-the embodiments ci invention illustrated ink the acccnn)aiming dravye ing, wherein Fig. l represents asectionalsde ele vasion of a 'grindingfspmdie and its housing ,;w1m

the spindlerotatably supported within the hus= "ing by bearings of my invent-ion, and. Fiel is section on the line.2-2 of Fig.. L Y Y j u Referring, to the: parts. by I4refe'rence characters, l' designates a shaft or spindle that heisa tapered end 2 for the application of' a grinding Wheel "0l vthe like. 'on the opposite 'end 3 or 'the spindle may be mounted a pulley, for example, by the spindle may be Adriven through-che .momia o'fajbu from an electric motor, al1 in accordance 'with l'common practice. 'ii-telativen'A near its 'taf pe'rd end, the spin-die is provided 'with a collar Vfrom the 'edge portion of which a Hansel; entends nr an axial direction. "ninsureaccuracy-'at the beginningI as asovr long periods-ofneivic I- at present prefer tov make the @oliar 5 with flange 6, integral 'with the-spindle, whicncase the spindle may be 'forged and the parte thereof. requiring such finish, machined, being v'citi-pe* cial-lsf essentialv that 'the 'inner surface or the flange 6` be concentric to the aalscf the spindle.

Pressed', or otherwise; suitanly' upon a. reduced portion 8 of the spindle adistance its 'end 3 is the elongated hub s f .a @parte from' the 'dg lilortiorir "0f Wlli'c'llr 'it'elfrd',y n.voppi* sitowdilrectiens, flanges. 112. .Animati-antw will'. nel

2 necogmred.v between the previously described co1;- lar with its flange 6, and each side of the collar I0 withits flange I2.

The spindle housing is designated,A generally. by the referencey numeral l5, and it comprises a cylindricaly casi-ng Ni, into the'ends of which are screwed annular leaps, i 'l having apertures whe-rein are tted the outer ends: of thimbles 1.8 that loosely surround` the spindle and have circuiti;- erential anges I9, engaged by the caps, thereby to oppose any tendency .for the thimbles tamme outwardly. The inner ends of the. caps and the correspcr-idingr ends o the; thimbles are in the same Aplane and bear upon the` web portions 0`f annular channel members that constitute elements of. the bearings. TheA 'annularchannel kmember adj acent ther tapered end of the shait lis designated 20. lEhe opening in. Saidmember 2B isof' somewhatv greater diameter than the pontien of the: spindle that extendstherethroug-hand the outer` face. of the Ainner ange' of sammember constitutes a bearing racetwhich yI have desig nated. 2v2. The o uterfiange 2.3 of the channel'. extends. along: the inner surface. of the casing ISL to provide proper support` for the channel.. .For the sake of. compactness, inasmuch as they overlap each other, the inner surface of tnsiange 12s and the outer surface of the liange are 'reversely taperedr As:1 a consequence; the external. diam!- eter of the annular channeljmember 2B' vlittle .greater'tnan the maximum diameter of the collar 5;` A. .grow-ed, cylindrical bearing race 2-5. is fits ted within the flange 6,.in. opposed relation 'tortue bea-ring race 22., and between anowor series of rotating bearing elements 21, shown. as bal-ifs. Therese 212`-is also srooved; and is snows reduced external diameter beyond 'the groove toward theedge oi' 'the ianfge or race.VV Obviously; inbea'rings-of 'a si-zc 'that will per-'mit' it,` the 4race zamayfbemade separate fromlandmountednpon the inner ange of the-member 2U'. An entier-ric# tion 'bearing '28, of conventional type'is interposed betweenthespindle and the casing itil cent 'the sine of 'unev 'collar i5 remote from lthe insulter-2W.i I

".LIel bearing: :assembly dSCt5id NSSESSS a characteristic present in: the bearings in my Patent Nn 2,481,146, dated September' 6 1943, kand Patents. Nos. m4835825 and' 2,488,929;

gnantedtofme Ton November 22, 1949, which'makes the 'presenti bearing especiallysuited 'tothe sup*V port- `of .a grinding` spindle. The. characteristic referred to resides tnefifact that the load vinfuus--y tributed substantially throughout.. 'the' entire'cin# cumferenoe "of: .the bearing: One annular .row

or series of rotating bearing elements, as those designated 21 in the present case, sustain a vertical load, for example, throughout substantially the top half of the circumference of the bearing, and the other row or series of bearing elements, as those of the bearingZB, sustain said load practically throughout the bottom half. Remembering that in the use of a grinder, the work may be vigorously pressed against the periphery of the grinding wheel at various positions thereabout,

it will be seen that a bearing of the kind described is especially efficacious.

Referring now to the other bearing assembly that is located adjacent the right hand end of the spindle, in Fig. l, annular channel members are associated with the collar I0 in like manner to the relationship of the corresponding parts in the first; described assembly; and series or rows of rotating bearing elements 3l are disposed between the inner flanges or races 32 of said chan-V nel members and cylindrical races 33 that are vapplied to the inner sides of the flanges I2- of the collar l0. The second described bearing assembly is held within the casing I6 between the inner end of the adjacent cap I1 and the opposed end of a "tubular spacer 35 that occupies the centralportion of said casing. Between the opposite end of said spacer and the first described bearing assembly are resilient washers 3,V which are common in such constructions, and are intended to con pensate for contraction and expansion of the bearing due to heat generated during prolonged use of the latter. This function of the washers I36 is of little consequence, however, in connec- -tion with my improved bearings, as they are practicallyl unaffected by the generated heat, although these resilient washers do allow for slight irregularity in the dimensions of certain of the parts,

as in the length of the spacer'V 35 and the depth Iof the Vcaps l1, thus providing a limited range of tolerance which obviously is desirable in the matter of production..

It will be understood by those familiar with Ythe art that the housing i5 may be clamped in the usual way in the stand or pedestal of conventional grinding equipment or. like apparatus; and while Ijhave shown my impro-ved bearings assoc iated with a grinding spindle, it is clear that the same is applicable to other kinds of apparatus for the support of shafts from any sort of journal boxes or housings, and regardless of whether the shaft or a surrounding structure which may be mounted thereon, rotates.

From the foregoing description it will be ap-v parent thatga principal distinction of rnyirnproved bearing resides in the radially spaced overhanging `races of the shaft or spindle, provided by the collars 5 and I and their respective flanges S and l2, ailording bearings for the shaft or spindle of relatively large circumference and consequential ease of operation.

Y Having thus Vdescribed my invention, what I claim is: f l

f1. In combination, a shaft, a collar provided with an elongated hub portion mounted upon the shaft and with oppositely extending flanges adjacent its periphery that are concentric to and spaced outwardly from the hub po-rtion of theV of the flanges of the collar, and the inner surfaces of the outer flanges of said member being flared complementary to the taper of said peripheral surface of the collar, and bearing means interposed between the inner flanges of the annular channel members and the flanges of the collar.

2. In combination, a vspindle having provision for ythe attachment of 'a grinding wheel or the like to one end thereof, a bearing assembly comprising a collar extending radially from the spindle adjacent-l vsaid end, the collar being provided at its periphery with an axially extending flange, an annular bearing member surrounding the shaft in slightly spaced relation thereto and having a flange spaced a, substantial distance inwardly from the inner surface of the flange of said collar, bearing means interposed between saidwflanges, the diameter of said annular bearing member exceeding that of said collar, an

Vannular bearing surrounding the spindle on the sitely extending axial flanges, annular bearing` members surrounding the shaft in slightly spaced relation thereto on each side of the last mentioned collar and having'flanges extending toward said collar in inwardly spaced relation to the flanges of the latter, said annular bearing members being of substantially the same external diameter as the first mentioned annular bearing member, bearing means interposed between the flanges of said annular bearing members and the angesof the collar, a cylindrical casing surrounding the spindle and tting over the several annular bearing members, caps applied to the ends of said casing and bearing against the adja= cent annular bearing members, and spacing means Within the casing between and-in engagement with said'bearing assemblies.

3. In combination, a spindle having provision for the attachment of a grinding wheel or the like to one'end thereof, a bearing assembly comprising a collar integral with the spindle andfextending radially therefrom adjacent said end of the spindle, said collar being provided at its periphery with an integral axially extending flange, an annular channel member surrounding the shaft and having an inner flange spaced a substantial distance inwardly from the inner surface of the flange of said collar,V bearing means interposed between said flanges, the outer flange of said annular channel member telescoping over the flange of the collar, an annular bearing surrounding the spindle on the side of said collar remote from the channel member, a second bearing assembly comprising a collar applied to the spindle adjacent the opposite end thereof andextending radially from the spindle and provided adjacent its periphery with oppositely extending axial flanges, annular channel members surroundingthe shaft in slightly spaced relation thereto on each side of the last mentioned collar and having inner flanges extending toward said collar in inwardly spaced relation to the flanges of' the collar, vthe outer` flanges of said channel members telescoping over the last mentioned flanges, bearing means interposed between the inner flanges of said annular channel members and the flanges of the collar, a cylindri' channel members included in the two bearing assemblies, caps applied to the ends of said casing and bearing against the adjacent channel members, and spacing means within the casing between and'in engagement With'said bearing assemblies. l

4. The combination defined by claim 2, wherein said spacing means includes a resilient element rendering said means variable in length.

5. In combination, a shaft, a housing encasing the shaft and having a cylindrical interior surface in radially spaced relation thereto, a cap applied to the end of the housing and having an aperture through which the shaft extends, a collar projecting radially from the shaft and provided adjacent its periphery with an axially extending flange closely adjacent the interior surface of the housing, an annular member tted within the end of the housing and held therein by said cap, said member having a relatively short outer iiange that extends along the interior of the housing and overlies the flange of the collar and a longer inner flange surrounding the shaft in closely spaced relation-thereto and projecting in an axial direction into the enclosure of and in substantially spaced relation to said fiange of the collar, bearing means interposed between and cooperating with the latter iiange and the inner flange of said member, the outer flange of said member extending through the plane of said bearing means, and an anti-friction bearing operatively disposed between the shaft and housing on the side of said collar remote from said annular member.

6. In combination. a shaft, a housing encasing the shaft and having a cylindrical interior surface in radially spaced relation thereto. a cap applied to the end of the housing and having an aperture through which the shaft extends, a collar integral with and projecting radially from the shaft and provided adjacent its periphery with an integral axially extending flange closely adjacent the interior surface of the housing, the inner surface of said flange being in exact concentricity with the rotating axis of the shaft, an annular member tted within the end of the housing and held therein by said cap, said member having a flange surrounding the shaft in closely spaced relation thereto and projecting in an axial direction into the enclosure of and in substantially spaced relation to the former flange, and bearing means interposed between and cooperating with said flanges.

7. In combination, a shaft, a housing enclosing the shaft and having a cylindrical interior surface in radially spaced relation to the shaft, closure means applied to the end of the housing and having an aperture through which the shaft extends, a collar surrounding and projecting radially from the shaft and provided adjacent its periphery with an integral axially extending ange closely adjacent the interior surface of the housing, the inner surface of said flange being in exact concentricity with the rotating axis of the shaft, an annular member fitted within the end of the housing intermediate the collar and said closure means, said member having a flange surrounding the shaft in radially spaced relation thereto and projecting in an axial direction into the enclosure of and in substantially spaced relation to the former flange, and bearing means interposed between and cooperating with said flanges.

VINCENT E. PALUMBO.

References Cited in the ile of this patent UNITED STATES PATENTS Number Name Date 2,173,561 Olson Sept. 19, 1939 2,481,146 Palumbo Sept. 6, 1949 2,488,825 Palumbo Nov. 22, 1949 2,491,728 Grafton Dec. 20, 1949 FOREIGN PATENTS Number Country Date 488,336 France I June 21, 1918 France Dec. 24, 1924 

